int Redled=13;
int Yellowled=3;
int Greenled=5;
int Buzzerpin=1;
void setup() {
  // put your setup code here, to run once:
pinMode(13, OUTPUT);
pinMode(3, OUTPUT);
pinMode(5, OUTPUT);
pinMode(1,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(1, HIGH);
delay(500);
digitalWrite(1, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
digitalWrite(1, HIGH);
delay(500);
digitalWrite(1, LOW);
delay(500);
digitalWrite(3,HIGH);
delay(500);
digitalWrite(3, LOW);
delay(500);
digitalWrite(1, HIGH);
delay(500);
digitalWrite(1, LOW);
delay(500);
digitalWrite(5, HIGH);
delay(500);
digitalWrite(5, LOW);
delay(500);
digitalWrite(1, HIGH);
delay(500);
digitalWrite(1, LOW);
delay(500);
}